Re: [PATCH/RFC 7/9] Virtual network guest device driver

Christian Borntraeger
2007-05-21T09:07:07Z

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> This is quite easy with KVM. I like the approach that vmchannel has
> taken. A simple PCI device. That gives you a discovery mechanism for
> shared memory and an interrupt and then you can just implement a ring
> queue using those mechanisms (along with a PIO port for signaling from
> the guest to the host). So given that underlying mechanism, the
> question is how to expose that within the guest kernel/userspace and
> within the host.

Sorry for answering late, but I dont like PCI as a device bus for all
platforms. s390 has no PCI and s390 has no PIO. I would prefer a new
simple hypercall based virtual bus. I dont know much about windows
driver programming, but I guess it it is not that hard to add a new bus.

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